Levelling and its General Application. By T. Holloway. Third edition in preparation.

Waterways and Water Transport. By J. S. Jeans. 55 illus., 520 pp., 8vo. (1890.) 9s. net.

Table of Barometrical Heights to 20,000 Feet. By Lieut.-Col. W. H. Mackesy. 1 plate, 24 pp., royal 32mo. (1882.) 3s.

Aid Book to Engineering Enterprise. By E. Matheson. Third edition, illustrated, 916 pp., medium 8vo, buckram. (1898.) £1 4s.

A Treatise on Surveying. By R. E. Middleton and O. Chadwick. Third edition, royal 8vo. (1911.) Part I. 11 plates, 162 illus., 285 pp. 10s. 6d. " II. 152 illus. and 2 plates, 340 pp. 10s. 6d.

A Pocket Book of Useful Formulæ and Memoranda, for Civil and Mechanical Engineers. By Sir G. L. Molesworth and H. B. Molesworth. With an Electrical Supplement by W. H. Molesworth. Twenty-seventh edition, 800 illus., viii + 936 pp., oblong 32mo, leather. (1913.) 5s. net.

The Pocket Books of Sir G. L. Molesworth and J. T. Hurst, printed on India paper and bound in one vol. Royal 32mo, russia, gilt edges. 10s. 6d. net.

Metallic Structures: Corrosion and Fouling and their Prevention. By J. Newman. 38 Illus., xii + 374 pp., crown 8vo. (1896.) 9s.

Scamping Tricks and Odd Knowledge occasionally practised upon Public Works. By J. Newman. New imp., 129 pp., crown 8vo. (1908.) 2s. net.

Co-ordinate Geometry applied to Land Surveying. By W. Pilkington. 5 illus., 44 pp., 12mo. (1909.) 1s. 6d. net.